Coexistence of two termite-eating specialists (Araneae)

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F20%3A00117486" target="_blank" >RIV/00216224:14310/20:00117486 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1111/een.12914" target="_blank" >https://doi.org/10.1111/een.12914</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1111/een.12914" target="_blank" >10.1111/een.12914</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Coexistence of two termite-eating specialists (Araneae)

Popis výsledku v původním jazyce

Competition among closely-related specialist predators has rarely been studied, and thus the mechanism of their coexistence remains enigmatic. Interspecific competition among specialised co-occurring predators capturing termites should be high. Here we investigated various niche dimensions, namely temporal, spatial and trophic, of a couple of jumping spider species of the genusStenaelurillus(Stenaelurillus guttigerandS. modestus) from South Africa, to find whether these two species co-exist and along which niche dimension(s) they differentiate. The two species co-occurred in two out of five study sites. Body size was not significantly different between the species. The phenology was shifted so that one species matured earlier. Circadian activity was not different, as both species were diurnal and active at similar times. Both species preyed almost exclusively on termites. The fundamental trophic niche was very similar and rather narrow. The realised trophic niche at the prey order level of both species was similar, but at the genus level it was different. InS. modestusit was narrower, as it captured mainlyOdontotermes, whileS. guttigerexploited a few termite species. The size of prey captured was also similar between the two species. The frequency of intraguild predation was negligible. We conclude that bothStenaelurillusspecies are specialised termitophagous predators. The two species can coexist across broad spatial scales due to spatial segregation on the landscape. At the sites where they co-occur, the two species specialise on different termite prey, promoting local coexistence.

Název v anglickém jazyce

Coexistence of two termite-eating specialists (Araneae)

Popis výsledku anglicky

Competition among closely-related specialist predators has rarely been studied, and thus the mechanism of their coexistence remains enigmatic. Interspecific competition among specialised co-occurring predators capturing termites should be high. Here we investigated various niche dimensions, namely temporal, spatial and trophic, of a couple of jumping spider species of the genusStenaelurillus(Stenaelurillus guttigerandS. modestus) from South Africa, to find whether these two species co-exist and along which niche dimension(s) they differentiate. The two species co-occurred in two out of five study sites. Body size was not significantly different between the species. The phenology was shifted so that one species matured earlier. Circadian activity was not different, as both species were diurnal and active at similar times. Both species preyed almost exclusively on termites. The fundamental trophic niche was very similar and rather narrow. The realised trophic niche at the prey order level of both species was similar, but at the genus level it was different. InS. modestusit was narrower, as it captured mainlyOdontotermes, whileS. guttigerexploited a few termite species. The size of prey captured was also similar between the two species. The frequency of intraguild predation was negligible. We conclude that bothStenaelurillusspecies are specialised termitophagous predators. The two species can coexist across broad spatial scales due to spatial segregation on the landscape. At the sites where they co-occur, the two species specialise on different termite prey, promoting local coexistence.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10616 - Entomology

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Ecological entomology

ISSN

0307-6946

e-ISSN

—

Svazek periodika

45

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

11

Strana od-do

1307-1317

Kód UT WoS článku

000549096900001

EID výsledku v databázi Scopus

2-s2.0-85088099302